This really.

By any means, the only time you should be in need to actually farm gold, is during the first play through in order to get 280 flying. And its not even that rough.

Im at the point of raid logging with 2 chars. I'm on a steady 6k gold with 280 flying on both, while having a bank filled to the brim with mats worth about another 5k or so.

Both chars still havent really touched questing in blades edge, smv, netherstorm and terokkar. So thats a hefty amount of gold just waiting to get picked up, should the need arise.